USA HISTORY

Detailed explanation-1: -The locations of New York City and Philadelphia helped them to become major colonial trading centers because both cities were located at the coast and had good ports, thus providing them with access to shipping. Both also were located at or near the mouth of a major rivers.

Detailed explanation-2: -The middle colonies included Pennsylvania, New York, New Jersey, and Delaware. Advantaged by their central location, the middle colonies served as important distribution centers in the English mercantile system. New York and Philadelphia grew at a fantastic rate.

Detailed explanation-3: -Urban commercial centers in Newport, Rhode Island; Boston; New York City; Philadelphia; and Charleston became thriving trade-oriented metropolises, with satellite port cities flourishing as well: New London, Connecticut; Wilmington, Delaware; Norfolk, Virginia; and Savannah, Georgia, among them.

Detailed explanation-4: -Industry. Abundant forests attracted both the lumbering and shipbuilding industries to the Middle Colonies. These industries, along with the presence of deep river estuaries, led to the appearance of important ports like New York and Philadelphia.

Detailed explanation-5: -Big cities such as Philadelphia and New York were major shipping hubs, and craftsmen such as blacksmiths, silversmiths, cobblers, wheelwrights, wigmakers, milliners, and others contributed to the economies of such cities.